20 Questions
What is the estimated number of human cells in the adult human body?
About 30 trillion (3×1013)
How many different types of cells are there in the human body?
About 300
What is the name of the project that aims to map all human cells?
HuBMAP (Human BioMolecular Atlas Program)
How many samples were organized by HuBMAP across 17 collections?
1551
How many organs were mapped by HuBMAP out of the human body's 70 organs?
31
What are the distinctive features of plant cells?
The distinctive features of plant cells include primary cell walls containing cellulose, hemicelluloses, and pectin, the presence of plastids capable of performing photosynthesis and storing starch, a large vacuole that regulates turgor pressure, the absence of flagella or centrioles (except in gametes), and a unique method of cell division involving the formation of a cell plate or phragmoplast that separates the new daughter cells.
What are the components of plant cell walls?
Plant cell walls are composed of cellulose, hemicelluloses, and pectin. In some cases, lignin or suberin may be secreted as secondary wall layers.
How do plant cell walls differ from cell walls of fungi, bacteria, and archaea?
Plant cell walls are composed of cellulose, hemicelluloses, and pectin, while cell walls of fungi are made of chitin, cell walls of bacteria are made of peptidoglycan, and cell walls of archaea are made of pseudopeptidoglycan.
What is the function of the large vacuole in plant cells?
The large vacuole in plant cells regulates turgor pressure.
What is the unique method of cell division in plant cells?
Plant cells undergo cell division through the formation of a cell plate or phragmoplast that separates the new daughter cells.
What are the primary cell wall components of plant cells?
Cellulose, hemicelluloses, and pectin
What is the composition of cell walls in fungi?
Chitin
What is the composition of cell walls in bacteria?
Peptidoglycan
What is the composition of cell walls in archaea?
Pseudopeptidoglycan
What are the secondary wall layers in plant cells?
Lignin or suberin
What are the distinctive features of plant cells?
Primary cell walls containing cellulose, hemicelluloses, and pectin; presence of plastids; ability to perform photosynthesis and store starch; large vacuole; absence of flagella or centrioles except in gametes; unique method of cell division involving cell plate or phragmoplast formation.
What are the primary components of plant cell walls?
Cellulose, hemicelluloses, and pectin.
How do plant cell walls differ from the cell walls of fungi, bacteria, and archaea?
Plant cell walls are composed of cellulose, hemicelluloses, and pectin, while fungi have cell walls made of chitin, bacteria have cell walls made of peptidoglycan, and archaea have cell walls made of pseudopeptidoglycan.
What secondary wall layers can be secreted by the protoplast in plant cells?
In many cases, lignin or suberin can be secreted by the protoplast as secondary wall layers inside the primary cell wall.
What is the role of the large vacuole in plant cells?
The large vacuole in plant cells regulates turgor pressure.
Test your knowledge of human cells with this quiz! Learn about the various types of cells in the human body and their functions. Challenge yourself to identify different cell types based on their location and role in the body.
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